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Carbon Steel Tap Bottoming Type 5/16-18 (1pc)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Pouch
- Product Family:
- Electrical Supplies
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
Metallics 51618CTBE – Frequently Asked Questions
1) What thread size does the Metallics 51618CTBE tap cut?
The Metallics 51618CTBE cuts a 5/16-18 thread, meaning a 5/16 inch diameter with 18 threads per inch, which is the UNC coarse pitch for that diameter. It's a single tap, supplied one piece per pouch.
2) What is a bottoming tap used for versus a taper or plug tap?
A bottoming tap like the 51618CTBE has almost no lead chamfer, so it cuts usable thread nearly to the bottom of a blind hole. Use a taper or plug tap to start the hole and get the thread aligned, then follow with the bottoming tap to carry the 5/16-18 thread down to the last turn or two. Starting a hole cold with a bottoming tap is hard going and easy to cross-thread.
3) Can I use the Metallics 51618CTBE to clean out damaged 5/16-18 threads in an existing strut or channel insert?
Yes, that is a common use for it. Because the bottoming style has a very short chamfer, it will chase and re-cut an existing 5/16-18 thread all the way to the bottom of a blind or shallow tapped hole, which a taper tap cannot reach. It only cuts 5/16-18, so confirm the existing fastener is that size, not 3/8-16 or 1/4-20.
4) Is the Metallics 51618CTBE tap carbon steel or high speed steel?
It's carbon steel. That's fine for hand tapping and chasing threads in mild steel, aluminum, and brass with a tap wrench. For powered tapping or harder alloys and stainless, a high speed steel tap stands up better to the heat.
5) How many taps come in the Metallics 51618CTBE and is it sold as a set?
One tap per pouch. It's a single 5/16-18 bottoming tap, not a three-piece taper/plug/bottoming set, so if you're starting threads in fresh holes you'll want a taper or plug tap of the same size alongside it.
6) What part number should I order for a 5/16-18 bottoming tap from Metallics?
Order Metallics 51618CTBE. The number reads out as the part itself: 5/16-18, carbon steel, bottoming type, one per pouch.
How fast can I get the Metallics 51618CTBE delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics 51618CTBE come with a warranty?
Absolutely. The Metallics 51618CTBE is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics 51618CTBE?
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